fixedpointlibrary.bsv

基于MATLAB的OFDM发送

//----------------------------------------------------------------------//
// The MIT License 
// 
// Copyright (c) 2007 Alfred Man Cheuk Ng, [e-mail] 
// 
// Permission is hereby granted, free of charge, to any person 
// obtaining a copy of this software and associated documentation 
// files (the "Software"), to deal in the Software without 
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
//----------------------------------------------------------------------//

//////////////////////////////////////////////////////////
// Some useful functions for FixedPoint Type
// Author: Alfred Man C Ng 
// Email: [e-mail]
// Data: 9-29-2006
/////////////////////////////////////////////////////////

import FixedPoint::*;

// take the most significant n bits from the fixedpoint value, result represented in bits
function Bit#(n) fxptGetMSBs(FixedPoint#(ai,af) x)
  provisos (Add#(n, xxA, TAdd#(ai,af)));
      return tpl_1(split(pack(x)));
endfunction // Bit